Jeffrey M. Harris, one of the principals in last year's Federal Mortgage Corp. scam, has been sentenced to one to 15 years in the state prison for credit-card fraud, a second-degree felony.

Harris, 30, pleaded guilty to the charge last October after the Utah County attorney's office agreed to drop a second credit-card fraud charge.Harris, former vice president of Federal Mortgage, received a suspended prison sentence in June after pleading guilty, along with his brother, Craig, to a litany of charges involving their failed firm. The brothers admitted running a racketeering enterprise in which lenders, borrowers and investors were bilked out of millions of dollars between March 1987 and April 1989.

While Jeffrey Harris was given a six-month jail term with work release, Craig Harris was sentenced to one to 15 years in the state prison.

In July, Jeffrey Harris was arrested at the county jail on new charges of credit-card fraud, for which he was sentenced Friday by 4th District Judge Boyd L. Park. The charges stem from activities occurring July 6 while Harris was on work release from jail.

Next week, 4th District Judge Ray M. Harding is expected to revoke the defendant's original six-month jail term and send him to prison for his earlier guilty pleas to racketeering, communications fraud, computer crime, credit-card fraud and forgery, all second-degree felonies.